It's very true that years ago I/O latency was much less of a problem with Linux. When I first started using Debian full-time about ten years ago, I never had problems with music skipping or anything like that. I guess in the kernel development since then, throughput has been prioritized over latency. Nowadays with 3.8 kernels and the same hardware, it's trivial to make my music player skip under load, even when its buffer is set to 30000 ms.
I haven't thought of trying the lowlatency kernel, so thanks for that idea. I will be trying that! Besides that, I wish Ubuntu would make BFQ the default I/O scheduler (or at least build it in by default so we can easily switch to it, instead of having to build kernels or install from third-party repos). Check out this video from a year ago: http://youtu.be/J-e7LnJblm8 Seems obvious to me that BFQ is the way to go for desktops. I have noticed lately that Deadline seems to result in less music skipping than CFQ, so I can see why Deadline is the default now. But Deadline doesn't support ionice, so I can't do things like run backups or upgrades in the background at minimum I/O priority. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/131094 Title: Heavy Disk I/O harms desktop responsiveness To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/131094/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
